(see also Bispectral Index Monitoring; Ramsay Scale; Richmond Agitation-Sedation Scale; Riker Sedation-Agitation Scale; Pain Management; ABCDE Bundle)

The SedLine Brain Function monitor utilizes sensors (electrodes) placed on the patient's forehead to monitor levels of sedation based on a bilateral 4 channel electroencephalogram (EEG). The result is displayed as a patient state index (PSi), and the values range from 1% to 100%, relating to the effect of anesthetic agents.

• 70% to 100% aware patient
• 50% to 70% sedation
• 25% to 50% ideal anesthetic depth
• 0% to 25% deep anesthesia

To apply the sensor and connect to a module:

• Prepare the forehead skin with alcohol and dry it before applying the sensor.
• Peel the center of the sensor from the tray and discard.
• Apply central electrodes onto the forehead. Center CT/CB electrodes on the forehead above the nose.
• Press the central electrodes down firmly on to the forehead. Do not press directly on the electrode, otherwise the gel may leak out.
• Peel the outer electrodes R2/L2 from the individual trays and apply R2/L2 to the hairless area just above the temple.
• Align the yellow indicator on the end of the patient cable to the yellow indicator on the sensor connector. Push together until the sensor connector fits into the patient cable.
• Ensure the SedLine module is connected to the SedLine patient cable and the root monitor.
• If any of the electrodes is displayed on the screen in red, yellow, or blue, push or wiggle the white lining around the electrode until displayed in green. Do not press directly on the electrode as gel may leak out.

Figure 1.46